David Koo
22Patents
9h-index
23Co-inventors
75Inventor score
Filing activity: Jan 3, 1986 → Jun 25, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4665438A | Picture-in-picture color television receiver | Electricity | 68 | Expired |
| US5121211A | System for echo cancellation comprising an improved ghost cancellation reference signal | Electricity | 33 | Expired |
| US5111298A | Method and apparatus for communication channel identification and signal restoration | Electricity | 23 | Expired |
| US5047859A | Method and apparatus for communication channel identification and signal restoration | Electricity | 19 | Expired |
| US4791597A | Multiplierless FIR digital filter with two to the Nth power coefficients | Electricity | 18 | Expired |
| US4782458A | Architecture for power of two coefficient FIR filter | Electricity | 15 | Expired |
| US5568202A | System for echo cancellation comprising an improved ghost cancellation reference signal | Electricity | 14 | Expired |
| US5179444A | System for echo cancellation comprising an improved ghost cancellation reference signal | Electricity | 13 | Expired |
| US5172232A | Method and apparatus for communication channel identification and signal restoration | Electricity | 9 | Expired |
| US9335904B2 | Context dependent application/event activation for people with various cognitive ability levels | Physics | 6 | Active |
| US6952238B2 | Method and apparatus for echo cancellation in digital ATV systems using an echo cancellation reference signal | Electricity | 5 | Expired |
| US7010269B2 | Pre-equalizer structure based on PN511 sequence for terrestrial DTV reception | Electricity | 4 | Expired |
| US6806915B2 | Method and apparatus for echo cancellation in digital communications using an echo cancellation reference signal | Electricity | 4 | Expired |
| US6898614B2 | Round-off algorithm without bias for 2's complement data | Physics | 3 | Expired |
| US5283650A | System for ghost cancellation comprising an improved GCR signal sequence | Electricity | 3 | Expired |
| US9377842B2 | Method and apparatus for realizing CPU power conservation | Emerging Cross-Sectional Technologies | 2 | Active |
| US6687317B1 | Method for correlation directed echo cancellation and channel equalization for the digital transmission link in vestigial side band amplitude modulation | Electricity | 1 | Expired |
| US11731778B1 | Apparatus for removing particulate matter from bleed gas | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11585269B1 | Apparatus for removing particulate matter from bleed gas | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US6133963A | System for echo cancellation comprising an improved ghost cancellation reference signal | Electricity | 0 | Expired |
| US11821363B1 | Apparatus for removing particulate matter from bleed gas and gas turbine engine including same | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US12352209B1 | Aircraft engine fluid separation system and method | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.